Subscription Problem With Local SMTP Server

Hello,

I am trying to create standard subscriptions using local SMTP server. When i create a subscription with no parameters, the reports and delivered via email. If I try to subscibe to a report with parameters and setting the parameter values , the subscription fails. The Data Source credentials are stored., The same report without parameters is delivered.

Here is the log.


ReportingServicesService!library!10!10/17/2007-12:10:07:: i INFO: Initializing EnableExecutionLogging to 'True' as specified in Server system properties.
ReportingServicesService!emailextension!10!10/17/2007-12:10:07:: Error sending email. Microsoft.ReportingServices.Diagnostics.Utilities.RSException: An error has occurred during report processing. ---> Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing. ---> Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: Query execution failed for data set 'DS1'. ---> System.InvalidOperationException: ExecuteReader: CommandText property has not been initialized
at System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
at Microsoft.ReportingServices.DataExtensions.SqlCommandWrapperExtension.ExecuteReader(CommandBehavior behavior)
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.RunDataSetQuery()


Please help !!